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Method (versions), repair appliance and system for pipe joint weld rework and pipe laying vessel Invention relates to pipe joint weld repair. Weld opening mechanism (20) is used for weld defect elimination. Said mechanism (20) comprises weld opening tool and tool guide (20b). Said mechanism (20) can feature a modular design and can be knocked down to separate portable elements (20a, 20b). Claimed method comprises the steps that follow. Tool guide (20b) is arranged as-locked relative to pipeline. Weld opening tool is directed around pipe weld with the help of aforesaid tool guide (20b). Weld opening tool is used to remove material from the weld faulty part. The recess thus made can have parallel vertical walls. Said recess is then filled with seam metal with the help of welding appliance. |
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Device and method for linear welding of thin-sheet ribbed panel Holes are made on the panel, uniformly along lines of welding while ledge-shape tenons are made on said ribs. Said ribs are placed on the panel. Said ribs are locked at this position while extending tenons are bent. The panels are fitted at table plate supports shaped to segments while ribs fit in V-like grooves of said supports. The panel is locked clamps to perform laser tack of ribs. Then, extensions of tenons are welded to perform laser welding of the ribs through panel sheet. Claimed device comprises table (1), plate (2) with supports (3) shaped to segments with grooves (4). Said clamps are composed of angle pieces (5) and clips (6). Supports (3) are provided with V-like grooves (7) with their axes aligned with lengthwise axes of welded ribs (8). Angle pieces (5) are located in grooves (4) of supports (3). Panel (9) has rectangular holes (10) aligned with ribs (8) provided with tenons (11) located opposite said holes (10). |
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Device for welding of circular seams Invention relates to welding and can be used for securing of hemispherical structure parts at welding of circular seams. This device comprises reduction gearbox with inclined rotational axis and built-in current feed device with sliding contact and positioning device of hemispherical structure of aluminium alloy arranged to spin at reduction gearbox driven shaft. Reduction gearbox conical gears are engaged via mid teeth pitch diameter with axial squeezing without radial and lateral clearances by means of springs fitted coaxially with rotary pins coaxially with conical gears. Said current feed device with sliding contact is insulated by appropriate sleeves fitted in conical gear hubs, reduction gearbox housing and at drive axle. |
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Installation for single-side automatic welding of sheets Device is intended for single-side welding of butt joints in sheets preliminary assembled from sheet blanks. Sheet (1) supplied by roller conveyor (3) is fixed in welding zone. To set position of the welding head (4) relatively to the butt joint the device elements can move along the sheet (1) by means of the trolley (2). The trolley (2) has rotating support carriage (6). On the support carriage (6) power beams (11) with clamps (12) for the welded sheets (1) and support beams (13) with guides (14) of the welding machine with head (4) are secured. The forming backing (5) is located parallel to the guides (14) and is installed on the support carriage (6) with possibility of vertical movement relatively to the welding head (4). To visualize position of the longitudinal axis of the forming backing (5) relatively to the butt joint of the welded sheet plates (1) on the support carriage (6) the laser indicator is installed, and welding head (4) is set to the light mark of the laser beam. The device has automatic control panel and unit of recirculating water cooling of the forming backing. |
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Machine for butt jointing of steel strips which allows induction thermal processing of butt welds Butt welding machine can be used for jointing the butts if strips (11, 12) by contact welding at appropriate plant. Two symmetric pairs of clamping jaws (22, 32, 31, 21) of the device for welding of one end of one strip (11) with second end of the other strip (12) are designed to retain and to position said ends of strips (11, 12) for connection by contact welding. Each of said jaws (22, 32, 31, 21) includes part (222, 212, 312, 322) to contact with one of said ends of strips (11). Every said jaw features the geometry and at least material which allow the decrease in eddy currents generated in said jaws due to electromagnetic induction at thermal processing of the weld. Said part of said jaw makes the kedge extending in direction of the strip end so that the gap between strip and induction head equals the depth of said ledge with due allowance for the gap there between. |
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Device to couple two guide sections Invention relates to devices for butt-to-butt connection of sections of a guide for suspended movable hoisting mechanisms and similar devices consisting of two halves. The sections are coupled with the help of bushes welded to their ends. At coupling the sections, their bushes are matched and a bolt is passed through them with a nut being screwed onto its protruding end. The end section of a weld joint, which connects the bush with the guide section wall, extends sidewards from the bush by the distance of 10…30 mm from it at the angle of 15°…45° to the longitudinal direction of the guide section. The weld joint shall be continuous at the transition into the end section extended sidewards, the said section shall be straight or bowed in the zone where the angle with the main section is formed. |
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Production of large-sized flat structure End surface of fragments to be coupled are levelled and cleaned. Bores are drilled therein and thread is cut. Said fragments are degreased by gasoline. Then, fragments are assembled to flat structure with the help of studs made of stainless steel. Then, edges are finished for welding, fragments are degreased and subjected to arc welding with application of bronze wire in lines of joint of said fragments. Now, welds are finished and surface of made structure is subjected to sand blasting. |
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Roller bench for alignment of shell rings and shell rings with bottom Separate section of reducing roller shoe consists of the frame, two drive roller shoes articulated with reduction gear and motor and two idle free running roller shoes. One or several section of driven roller shoes consist of the frame, two driven roller shoes engaged by couplings with pairs of idle roller bearings an pair of idle roller bearings. Section of driven roller shoes are mounted with frame abutting on the section of driven reducing roller shoe to make an integrated section with aligned continuous drive rolling support and aligned continuous rolling support. Roller shoes in pairs are mounted at different heights, those nearby the bench lengthwise axis are arranged below far ones with allowance for touch of standard shells with four roller shoes at a time. The number of driven roller shoes is selected proceeding from the possibility for bench to support calibrated shells, to set them as required and to assemble in circular butt. Sections of mobile roller shoe are arranged at track to displace there along in mirror axis of roller bench. |
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Invention relates to coordinate device and can be used in high-precision processing hardware, primarily, for processing of articles by laser tools. Bed 1 supporting coordinate axes 2, 3 has the cavity that makes a spark-quench chamber 9 with openings 8. Working zone is communicated via openings 8 and spark-quench chamber 9 with gas-dust bend pipeline 7. Spark-quench chamber 9 openings 8 are communicated with working zone 6 by throttling device. At laser processing, air from working chamber and combustion products flows via throttling device in spark-quench chamber 9. Note here that flow rate drops to make combustion product particles settle in said chamber. Combustion products are discharged from spark-quench chamber via hatch. Plugs are used to adjust air intake from chamber part accommodating head with laser tool to allow air flow rate control for efficient removal of combustion products. |
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Method and machine for metal strip bonding Set of invention can be used for bonding the ends of metal strips together by point friction welding, for example, at the inlet of aluminium strip machining unit. In compliance with this invention, both edges of the strips are positioned one on the other to overlap. First, end of first strip (1) is locked by clamp (15) at outlet side. Start of second strip (2) is positioned across direction of motion relative to first strip end, for example, centred thereat and locked by clamp (14) at inlet side. Or, on the contrary, first, start of second strip (2) is locked to position first strip (1) end across direction of motion relative to second strip start to lock it thereat. Both are friction welded together at overlap zone by welding head (5) at several weld points. Proposed device comprises at least one clamp (15) at outlet side for locking the first metal strip (1) end and clamp (14) at outlet side to lock the second strip (2) end start. Said clamps (14) and (15) can displace across the direction of strips motion. |
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Method of making welded thin-wall conical shells with stiffness ribs This intention is used for making thin-wall conical shells with stiffness ribs by welding. Shell segments are made. Segment lengthwise edges are turned up to make stiffness ribs while segments are placed at detachable support plates arranged on carcass base to make a conical surface with clearance between lateral edges of adjacent support plates. Shell segments are placed at said carcass with turned up edges in clearances between support plates. Segments are subjected to transverse contraction unless edges of adjacent segments are jointed. Then, said segments are locked at said base and welded together along the lengthwise edges from outside. Then, detachable carcass support plates are withdrawn. Produced shell is withdrawn from said carcass together with detachable plates. Produced shell is machined. Welded shell has stiffness ribs made integral with the material of segments to up the strength. |
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Method of producing welded thin-wall conical shell with lengthwise crimps Invention relates to production of welded thin-wall conical shell with lengthwise crimps, used for example as a heat shield of gas turbine engine nozzle. Shell segments are formed. Said segments are arranged at the bed shaped to truncated cone and furnished with the flange placed at larger-diameter end and supports arranged at said conical surface along generating lines. Segments crimps are placed at supports and locked at the bed. Then, stiff squeezer carcass composed of conical frame consisting of end flanges is arranged coaxially at said bed over its segments. Larger-diameter end flange is shaped to ring. All said flanges are interconnected by lengthwise strips with pressure elements arranged thereon. Frame ring-like flange and bed flange are tightened together. Then, segments are finally locked by thrusting them by pressure elements against conical surface. Lengthwise edges of adjacent are welded to unlock made shell and to remove it from the bed. |
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Rails lining in contact butt welding machine Invention relates to contact butt welding. Manipulator with distance transducers fitted thereat is fed into rail ends abutting area to correct rail end clamped position with the help of servo gears by driving them vertically and horizontally. Said manipulator is made abut tightly on rolling surface and side face of one of the rails by electromagnets. Said one rail is taken to make a reference base. Used error signal represents the difference in spacing from reference base to rolling surface and from reference base to side rail faces measured by distance transducers. |
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Method of assembly and mill for assembly of i-beam by welding Invention relates to method and mill for production of welded I-beam. Proposed method allows the welding of four-flange seams by argon arc in one pass. Proposed mill comprises bed 1, hydraulically driven rolls 2 with reversible electric drive for setting and centring of beam wall and fitting the beam to welding start position, clamping rolls 3 to centre top flange relative to beam wall, welding heads 5, main hydraulic clamp 6 with roller, bridge 7, supports 8, 10 with hydraulic drives to mounting welding heads, inlet roll table 9, electrically driven propulsor 11 composed of pull roller with drive motor 12. Governor 14 is connected in main motor circuit to control pull roller shaft rpm, that is, the welding rate. |
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Method of producing of distributor Invention relates to production of gas turbine engine distributor. The latter represents ring sets of fixed or rotary shape vanes that make divergent channels and can be used in aircraft engineering, machine building, etc, for attachment of vanes to said rings. In locking of vanes and rings in welding and assembling device, outer and inner rings are fitted at appliance base, Vanes are arranged along circumference of bearing ring. Retainers fitted at said bearing ring the vanes are locked against the turn. Vanes are pressed to bearing ring arranged under vanes by lock ring with rubber seal fitted on centering posts. Then, case is set and produced closed space is filled with inert gas. Then, laser welding is performed. Mix of argon and helium represents said inert gas. At least three equidistant retainers can be mounted at bearing ring. |
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Method of producing welded article Invention relates to electric welding of primarily thin-sheets articles from different-thickness and chemically inhomogeneous pipes. Pipes are aligned. Edges are arc tacked and annular seam is arc welded over pipe end face by short-time current pulses. Tacking and welding are made simultaneously by several fixed heat sources composed of torches or electrodes. Heat sources are spaced apart so that heat contact between live arcs is inhibited. Every heat source is connected separately to its power supply. |
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System for assembly of automotive bodies or their assembly units Invention relates to machine building. Proposed system comprises assembly station and assembly line. Assembly station comprises mounting and assembling means. Mounting means serves to mount and lock body components at assembly position. Assembly means is intended for welding jobs. Mounting means comprises several pairs of mounting and clamping appliances. Said pairs are arranged on line both sides at assembly station. Every pair is equipped with multiple mounts and clamps D for interaction with body components. Lateral mounts and clamps move along assembly line between their closed and open working positions. Every said lateral mount and clamp structure comprises rigid support and frame to carry aforesaid mounts and clamps D resting on said rigid support. Platform of every lateral mount and clamp structures can displace in lengthwise guides on one side of assembly line between assembly station and wait position. Rigid support comprises base platform and two interconnected columns. Lengthwise and crosswise positions of columns differ for rigid supports made for different body types. Platform making a part of every mount and clamp structure is identical for all aforesaid rigid supports. |
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Strip assembling and welding machine Invention may be used at tube welding mills for production of high-quality 20-60 mm-dia tubes from stainless steel. Shears comprise fixed blades secured to bed and moving blades arranged on sides of housing displacing in bed vertical guides. Machine bed is composed of two halves with vertical slot there between to accommodate housing with shears. Housing drive is composed of two-slider drive mechanism. Said housing doubles as one of said sliders and is articulated with another slider furnished with horizontal displacement drive. Welding device copper shoe is equipped with horizontal displacement drive. Welding head is provided with rolls and cutter arranged there between to reinforce weld seam. Strip end reduction mechanisms are arranged to displace in machine bed horizontal guides with the help of slider. Said slider houses wedge mechanisms for strip end clamping and blades to cut odd strip parts with deficient weld seam. |
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Method of measuring upset force in contact butt welding Invention may be used in strip welding at special contact welding machines by continuous burning-off or resistance. Top and bottom box-like measuring elements are fitted in welding machine in place of jaws. Said elements comprise strain gages integrated in measuring half-bridges glued on their vertical walls. Thickness of said vertical walls are selected with due allowance for relationship between period of their intrinsic oscillations at impact load and upset duration that makes, at least, 0.01. Strain gages of every half-bridge are connected in series opposition. Point of integration of every half-bridge is arranged at, at least, one metre from welding zone. Bridge unbalance current is measured at horizontal strain of aforesaid vertical walls by upset force transferred via clamped part. |
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Invention relates to welding. Vacuum chamber 1 accommodates working platform to support article to be welded, vertical guides 9, 10 with moving crossbar 6 secured thereat and provided with rotary support 3, and electron beam gun 2 arranged at said rotary support 3. Support 5 is mounted at crossbar 6 to reciprocate there along. Carriage 4 is mounted at said support to displace in direction perpendicular to support travel. Rotary support 3 is arranged at carriage 4. Working platform can displace. Vertical guides 9, 10 are secured at lateral walls 7, 8 that make angle. Arrangement of electron beam gun at vacuum chamber angle increase article processing zone to add to unit efficiency. |
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Method of preparing strips for welding at continuous metallurgical plants Invention may be used in strip welding at specialised machines incorporated with high-efficiency continuous metallurgical units, for example, tube welding and profile-iron bending stands, and pickling lines After cutting the strip front end, shears top support is stopped at bottom position to bring steadier jaws together. Jaws chamber allows gripping only rear end of the strip there between. Shears top support is lifted along with gripped rear end of the strip. Note here that strip front stub end fall into the box. Then, steadier jaws are pulled apart to place rear end onto shears bottom support knife. Now, welding bed with torch is displaced to butted ands to weld them together. |
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Invention relates to working tool for assembling and welding work pieces together. Table 8 comprises retainer 16 to extend beyond the table for contact with machined workpiece. Location station 2 serves to clamp workpiece at said table while station 4 is intended for workpiece machining. Element 20, 24 is intended for clamping workpiece and bringing it contact with retainer while clamp 22, 26 serves to secured workpiece to table. Location station 2 comprises pressure drive 48, 50 to displace aforesaid clamping element. |
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Welding unit and method of welding Invention relates to welding work pieces together (versions). Proposed unit comprises table 18 for 1st, 2nd and 3rd work pieces to clamped thereat, first positioning station 2 whereon 1st and 2nd work pieces B1, B2 are clamped to said table, first welding station 4 whereby said work pieces B1, B2 are welded together in the zone of their mating surfaces, cutting station 6 whereby said mating surfaces are cut to preset shape, second positioning station 8 whereat third 3rd workpiece B3 is clamped to table 18 and second welding station 10 whereby 3rd workpiece and first or second workpiece are welded together in the zone of their mating surfaces. |
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Invention relates to welding of pipelines. Shell lengthwise grooving for welding is performed at edges of all shells at a time to radius of their curvature. Every shell is located relative to center of shell radius. Grooving is carried out using flame cutters fixed at appropriate head with servo drive composed of roller mechanically coupled with cutter and pressed against shell outer surface in grooving. |
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Device for butt welding of strip ends Invention relates to welding and may be used for butt welding of strips end to make an endless belt. Proposed device comprises frame with prisms, strip clamps, welding unit with housing and guide beams. Strip clamps are located at said frame. Guide beams are arranged on frame prisms. Welding unit is secured at said frame to horizontally displace relative thereto. Welding head in said welding unit may displace perpendicular to strip feed. Besides, proposed device comprises guide beams, plunger hydraulic cylinders, tables with centering rules and guillotine-shears. Said guillotine-shears comprises top and bottom blades with supports, support struts, levers and piston cylinders. |
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Proposed welding equipment may be used for butt welding of multiple blanks B arranged in opposition. Coordinate stations 4, 6 serve to accommodate separate blanks. Welding station 2 has welding head. First table 10 and second table 12 can displace between welding station 2 and coordinate stations 4, 6.When first table 10 displaces to coordinate station 4, second table 12 shifts to first station 2, while when first table displaces to welding station 2 second table 12 shifts to coordinate station 6. Thus, blanks may be welded together by welding wore to make finished product. In compliance with first version, first coordinate table is located on one side of welding station and second table is located on opposite side. Note here that first and second coordinate tables are located at one height in one plane. In compliance with second version, coordinate station is located on one side of welding station while first and second tables displace in appropriate paths differing in height. |
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Method of assembling box-like structures for automatic arc welding by consumable electrode Invention relates to assembly of box-like structures for welding at specialised devices. Proposed method comprises mounting and locking the opposed cover frame and box bottom. Then, corrugated walls are plaid on surfaces of said cover and bottom. Then, two edges are subjected to contact tack welding to produce weld points on both sides of corrugation. Weld points are made at corrugated wall edges adjacent to cover frame and box bottom. |
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Device for arc welding of strips at continuous metallurgical plants Invention may be used in strip welding at specialised machines incorporated with high-efficiency continuous metallurgical units, for example, tube welding and profile-iron bending stands, and pickling lines. Common carriage carried guillotine shears secured thereto with top moving support and bottom fixed support, steadier of strips to be welded, welding torch and copper strap arranged there under and provided with key-type strip end clamps, and carriage drive. Hydraulic cylinder with rod is fixed vertically ahead of carriage. Rod free end is provided with roller mounted in supports to turn and to get in contact with welded strip front end to act thereon from below to displace said strip and provided for gap between strips ends. Hydraulic cylinder rod is connected with cylinder limit switch. |
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Method of preparing strips for welding at continuous metallurgical units Invention may be used in strip welding at specialised machines incorporated with high-efficiency continuous metallurgical units, for example, tube welding and profile-iron bending stands, and pickling lines. With welding machine pneumatic clamp lifted keys, rear end of previous strip is fed to built-in shears to stop it nearby cutting axis to cut it off. Shears top support is lifted to upper position along with rear end clamped by steadier to feed front end of next strip under lifted rear end of previous strip to stop it nearby cutting axis. Steadier is pulled apart to place rear end on front end to cut off strip front end. Welding support with torch is displaced from initial position to butted strip in welding position. Strip front end is lifted by hydraulic cylinder rod to produce welding gap between strip cutoff edges and to clamp strip edges to be welded together. After welding, hydraulic cylinder rod is displaced in initial position to lift aforesaid keys and to move welding torch in initial position. |
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Universal tube assembly production unit Invention relates to mechanised welding of metal hardware including custom equipment and may be used for repair of tubes dismantled from main lines for reuse. Proposed unit is equipped with, at least, one moving support 4 and roller rotation drive 2 at tracks 1 and stationary operational unit. Roller rotation drive self-propelled bogie 2 composed of lifting platform is mounted on driven wheels. Two pairs of drive rollers are mounted on said platform for tube assembly 12 and provided with geared motor drive and tube transverse adjustment mechanism. Swinging thrust rollers allow tube assembly to be pressed there against in lifting said platform. Stationary operational unit 3 allows bogie of rotation drive 2 to run there through on track and is provided with working sliding platforms to accommodate processing equipment. Welding set is mounted at operation unit top part. |
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Device to bind corrugated walls to transformer housing cover frame and bottom Invention relates to welding and may be used in making power transformer welded housings. Proposed device comprises two carriages mounted on common frame to displace along the frame driven by motor. Said carriages are furnished with welding electrodes with mechanism to bind them to parts, welding transformers, intake table with guides and lengthwise travel drive, as well as drives and welding cycle control system. Said mechanisms to bind electrodes to parts are composed of two-arm levers coupled via axles with carriages. Front ends of said carriages accommodate two copper electrodes with leads from welding transformers. Pneumatic cylinders of said mechanisms are secured to carriages and connected with opposite ends of said levers. Intake table is provided with height adjustment screw drive and article eccentric clamps. |
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Method of metal thermal nesting Invention relates to machine building and may be used in metal thermal nesting machines for retaining large volume of metal sheets and removing sheet metal combustion products in oxygen and plasma nesting. Proposed table comprises lengthwise and crosswise vent channels and air-operated crosswise vent channel opening systems arranged in lengthwise channel. Such arrangement allows venting only zone of thermal nesting, hence, increasing blower efficiency. It is furnished with replaceable two-slope protective canopies secured above vent channels to protect vent channels from fused metal. Transverse vent channels have several elongated vent openings with expanded ends cross-section varying along vent channel length. Note here that said table incorporates extra interconnected sections to add to efficiency of thermal nesting zone use. |
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Device for producing box-shape welded components Invention relates to assembling and welding box-shaped components at special devices. Proposed device comprises housing with turn table arranged at sidewall and turn table motor drive. Tie rod is arranged in cantilever inside said housing to translate therein. Two opposed beams arranged coaxially with respect to guide tie rod and support are coupled with tie rod. Every said beam is arranged to interact via rollers with turn table and is articulated with lever supports arranged in pairs along beam length. Two spring-loaded spacer levers are mounted on both ends of every beam to fix bottom and frame of covers of components being assembled. Tie rod translation drive allows adjusting spring-loaded levers force. |
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Strip assembling and welding machine Invention relates to production of welded tubes, particularly, to perfection of strip assembling and welding machine incorporated with thin-wall 20-60 mm - dia-tube production stands. Proposed machine comprises housing with clamps and thrust means, strip end drives and welding device. Housing side walls are provided with clamp sliding guides for every end of strips. Every thrust means is made up of one-arm lever. Said lever is coupled via extra lever with turn hydraulic cylinder. Free end of one-arm lever accommodated replaceable stop plate secured thereon. Strip end drives are made up of driving pull-rollers arranged on aforesaid housing. There is welding device over the place of strip's joint, above one-arm leves. |
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In the proposed method a half-block of a cylindrical insert for a vessel with a double hull is formed on receiving platforms of a rotary device making it possible to weld all welding seams in a technologically convenient lower position, for this purpose operations of device rotation are repeated technologically for a required number of times. In the rotary device used to realise the method there is a casing, the external surface of which is arranged in the form of a cylinder with a horizontally arranged axis, along which in the body there is a prismatic groove forming two adjacent congruous planes on the inner surface arranged at the angle of 90° to each other and arranged in the form of platforms. On these platforms there are fixators for fixation of planar sections, and also on them there are rail tracks installed along the casing axis coupled with workshop rail tracks. The device casing rests on rollers fixed on axes in rotary shells installed on the foundation. Besides, the device is added with the third congruous plane arranged at the angle 90° to the second plane and parallel to the first one, and besides, axes of all or some of the specified rollers are connected by a drive with an electric motor. |
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Inventions may be used in diffusion joints of components with nonplanar shape, particularly, aircraft engine parts. Firs component of pressure side with first joint surface and second component on rarefaction side with second joint surface are arranged to make butt joint on mandrel. Outline of mandrel first surface complies, at least, partially, with first component surface portion while mandrel second surface outline is aligned with second component portion. Components are jointed together at separate positions along their lengthwise line. First and second components are positioned together with mandrel at die assembly. Said surfaces are jointed by diffusion in furnace by applying uniform pressure along joint surfaces. Male and female dies may be jointed together by multiple fasteners with lower thermal expansion factor. Flexible pneumatic conveyor is arranged between male or female die and one of joint surfaces. |
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Device to retain components in method for repair of single-block turbine wheel blade Invention relates to a device for retention of components during repair of a blade of a single-block turbine wheel by means of electron-beam welding of an insert with a blade along the joint plane. The device comprises facilities to retain the wheel and facilities for controlled retention of the blade and the insert. The facilities for controlled retention of the blade and the insert comprise a support, where facilities are placed to retain the blade and the insert so that the space above the joint plane makes it possible for the electron beam to pass through. The relative position of the blade and the insert is controlled with the help of facilities installed on a single support, letting the electron beam pass through. |
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Method and device for positioning sheets for butt welding Invention may be used for butt welding of equal- or different-thickness flat elements in production of, for example, automotive chassis. Sheet elements 17 are placed on first and second tables 1A and 1B arranged to displace relative to each other. Sheet elements 17 are brought in contact with locating elements 16a and 16b arranged ahead of and above opposite edges 1' of said tables 1A and 1B. Extending edges of sheet elements 17 are arranged ahead of opposite edges 1' of tables 1A and 1B. Sheet elements 17 are positioned in transverse direction and locked on tables 1A and 1B. After driving away of aforesaid locating elements, tables 1A and 1B are drive to displace relative to each other unless extending edges of sheet elements 17 stay in contact and welded seal X is formed. |
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Method of preparing strips for welding at continuous metallurgical units Invention may be used in strip welding at specialised machines incorporated with high-efficiency continuous metallurgical units, for example, tube welding and profile-iron bending stands, and pickling lines After lining-up, compressing by rear rolls and cutting front end of previous strip, next strip is fed to front rolls with equidistant convex-concave surfaces to be stopped and for its front end to extend beyond the rolls. Strip is clamped bent in rolls owing to its elastic strain and transferred to shears to it to be released. Then, it is clamped again at front rolls. Centering device is opened to cut strip end by welding machine shears. Top front roll is lifted to feed machine with shears into welding zone. Now, ends are clamped by welding shears to lift clamping front rolls and rear top rolls. |
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Field multifunctional plant for welding of pipe assemblies and non-standard equipment Invention relates to a field multifunctional plant for welding of pipe assemblies and may be used for piping of reservoir parks, construction of oil pumping stations complexes, gas distribution stations, when assembling process pipeline systems, etc. The plant comprises two lines (1), (2) of welding, a welding unit, a source of supply and a mobile workplace of a welder doing a root layer of a joint, made as rail tracks, where the following is installed. At each line there are roller supports with the possibility of displacement in longitudinal direction with rotators, movable and fixed ones, and faceplates installed on them. The welding unit is made of a self-propelled post of automatic welding under a layer of flux with a control panel of rotators made with the possibility to adjust speed of rotation. The specified self-propelled post is installed on a rail track with the possibility to vary height, move longitudinally along the tracks and turn by 180°. A fixed rotator is installed at one side of the line end. A rotator faceplate consists of a steel sheet of round shape with paths provided on it to move cams. On the sheet there is a stem with telescopic grip made with the possibility to grip a pipe assembly at a branch or a T-joint. |
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Method of machines manufacturing Invention may be used to manufacture a section of a machine, comprising side walls and inbuilt prefabricated middle structural parts and assemblies, for soft drinks industry, such as cleaning machines, pasteurising machines, heat shrinkage tunnels or similar, designed to treat reservoirs, such as bottles, tins, glass jars. The first side wall is fixed on a fixing device. The opposite side wall is positioned at a distance that is more than the distance, at which the side walls are arranged from each other after complete assembly. At least one of the side walls has support elements, with the help of which the middle inbuilt parts are maintained, is not fixed. The specified parts are attached bottom up between the side walls with the help of glue, riveting, bolt jointing and welding. In the end the fixing devices are approached to close the section, and the middle structural parts are welded with the side walls from the outside with the help of laser or electron-beam welding. |
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Invention relates to butt welding. Proposed device comprises movable welding head, support table 1 and clamp 3. Said clamp incorporates two clamping elements 4, 5 that act independently. At least one clamping element 4, 5 is suitable for use with two or more pressure magnitudes. Additional horizontal elements 11 serve to press on metal sheets to be welded together and strained unless reliable contact between surfaces to be welded is provided. |
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Method and fixture for welding sheet structures Invention may be used for welding case-shaped structure made up of sheets, for example, those to be mounted in open sea. Sheet components of bottom and lateral plates 100 and 102 are arranged on welding fixture that may turn about lengthwise axis and has its cylinders 12 resting upon separate end support. Axis passing through common center of gravity of sheet components is located nearby rotational axis of welding fixture. Said sheet components are preferably arranged, in fact, in symmetry about said rotational axis. Bottom plates are arranged on opposite sides from welding fixture rotational axis, secured by first supporting elements 20 and may be detached therefrom. Lateral plates are secured to welding fixture by second and third supporting elements 22, 24, and may be detached therefrom. Welding fixture has heating resistors to heat welded components to preset temperature. Preferably, mechanised flux arc welding is used. |
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Device to weld cylindrical article circular butts Proposed device may be used in electron-beam welding of turn burrs in vacuum. Articles 15 are arranged to be welded together with open vacuum chamber 1 by means of support disk 13, guide 4 and spring-loaded integral centers 14. Chamber sealed and evacuated, welding tool, electron-beam gun 2, is aimed at but to be welded. With reversing drive shaft 17 revolving in direction whereat manipulator is locked by stop 9, spindles 10 and articles 15 are revolved with the help of gear wheels 11 and 12. Note here that friction element 16 slips on central gear wheel 12. With said drive shaft reversing its rotation, manipulator 3 starts turning in flange 6 and rear center 5 with the help of friction element 16 arranged on central gear wheel 12 together with support centers 14 made integral and provided with springs. |
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Clamping device with autonomous system of compensation Invention refers to clamping device for contact parts set into initial position. It can be implemented particularly in welding tongs and in systems of disk brakes. The clamping device contains first element (18) and the second element relatively travelling under influence of drive device of screw-nut type. System of compensation (46) is positioned between moving support (14) and first element (18) rigidly connected with nut (12) for repeated installation of this first element (18 ) into an initial working position relative to the second element. The system of compensation consists of compensating disk (68) at rotation rigidly coupled with hub (50) screwed on movable support (14), of measuring disk (80) mounted on moving support (14) by means of mechanism of idle run (76) and of at least one spring (74) for accumulation of force. The spring is installed between compensation disk (68) and measuring disk (80) so, that storage of parts wear condition is facilitated with relative angular position of measuring disk (80) in relation to moving support (14). |
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Method of producing curvilinear tubes from formed hald-branch pipes Proposed method comprises assembling half-branch pipes, fixation of edges and fusion welding of lengthwise butts. Edges are fixed by point-contact welding at two points on feeding filler wire under electrodes at (45 -90)° to butt line. Filler wire is pressed against the floor by branch pipes. Wire contracted, it is axially loaded by expanding force equal to (0.1…0.2)σB, where σB is wire material ultimate strength, MPa, not exceeding force of wire teat off from half-branch pipe. Then, current pulse is sent through electrodes to melt wire through and melt half-branch pipes at points of contact with wire. Note that fixture pitch is set equal to (1.0…2.0)Do, where Do is branch pipes diametre, mm. |
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Invention relates to equipment intended for assembling and electron-beam welding to be used in aerospace and aircraft engineering, transport and chemical industries. Proposed device comprises bed 1 with guides 2, front stationary driven slide 3 with centraliser 13 designed for mounting the shell to be welded, carriages to place shells to be welded together thereon that can move in the bed guides, rear driven slide 4 with clamping device and electron-beam gun. Portal guides 6 are arranged parallel to bed guides 2. Local chamber 8 is arranged on carriage to move in portal guides 6. Electron-beam gun is arranged on local chamber 8 furnished with end seals made up of circular chambers with their inner spaces communicated with working medium feed system. Said chambers accommodate driven clamping devices. Carriage supports represent swinging elements. |
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Invention can be used to joint strips together to produce endless strip. Proposed device comprises at least one clamp at least one cutter and at least one jointing device articulated together. Strip top and bottom clamps can be driven by levers towards or from each other to clamp or release the strip. Welding table made up of, for example two parts, is used to support strip sections after cutting. Thereafter, new positioning is performed. Note here that strip ends can be moved by lateral displacements of clamps. Prior to jointing, two cut strip ends are leveled in height to allow equal thickness of strips ends. Leveling mechanism incorporates at least one clamp. |
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Method and device for welding flat panel necks to manifold pipes Invention relates to method and device for welding flat panels necks to manifold pipes. First, halves of all circular seams and lengthwise seam of flat panel necks collars on the tubes on both sides of manifold unit. Then manifold unit is turned through 180° for second halves of circular seams and tube lengthwise seam to be welded. Circular seams are made with seam ends overlapped, while lengthwise seams are welded with the torch crosswise oscillation. Device frame 6 accommodates two manipulators 4 and 5 fitted on driven carriages 7 and 8 to move along said frame, said manipulators being fitted with welding torches 11 with their drives 12. Receiving table 13 has crosswise travel drive, screw clamps and guides. Manipulator 4 houses rotation drive, while manipulator 5 houses spring clamping mechanism 18. Both manipulators incorporate two-prism-like grips. Welding torches 11 are arranged on guides representing toothed segments 20 jointed with rotation drives 21 and secured on carriages 22 with lengthwise travel drives 23 and thrusts 24 to limit carriage travel in feeding their welding torches to manifold pipe. |
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Method of produced small-weight blade for gas turbine engine Invention relates to machine building and can be sued for fabricating gas turbine engine blades. Blade body workpiece is machined to produce a part comprising body back with cavity and jointing groove along the edges of said cavity, and tail end. Blade pressure surface is produced with shape and sizes mating body back jointing groove. Blade pressure surface is fitted in said jointing groove to weld both together. Welded seam is treated thermally and blade is subjected to finishing. Blade workpiece has base elements arranged on tail end and back face that make base plane. Prior to machining, workpiece is fixed relative to basic plane. Machining, welding and finishing are effected with orientation along basic elements. Welding is performed by electronic beam in vacuum with minimum electronic beam power on the side of jointed parts that allows penetration of welding bath in jointing slot of not over 0.2 to 0.4 mm. |
Another patent 2550836.